Isolation Valves - Bio-Chem Valve

1 Of contentsIsolatIon Valves GeneRal InfoRMatIonManifolds & CoolCube Hit and Hold CircuitPage 7100T Series Isolation / , / and orifice sizes (2-way NC), / and / orifice sizes (2-way NO) and / and orifice sizes (3-way)Page 11 Page 5 Page 4 Isolation Valves General InformationWhy choose an Isolation Valve and ApplicationsMaximum inertness, fast response time, small footprint, 9075T Series Isolation / and orifice sizes (2-way) and / and orifice sizes (3-way)038T Series Isolation / and orifice sizesPage 2 Page 3 Isolation Valve Selection GuideWhat is an Isolation Valve ? Bio-Chem Valve Isolation Valves are solenoid-operated devices. The Valves use a flexible diaphragm to isolate the solenoid actuation mechanism from the fluid path. Isolation Valves are available in three differentconfigurations; normally closed, normally open and 3-way. When the Valve is energized, the solenoid retracts the armature that is attached to a flexible diaphragm.

2 In a normally closed Valve , this raises the diaphragm allowing fluid to flow between the inlet and outlet ports. For a normally open Valve , the operation is reversed. When the Valve is energized, the diaphragm presses down to close the fluid Valves have three ports referred to as normally closed, normally open and common. When the Valve is de-energized, fluid flows between the normally open and the common port. When the Valve is energized, the Valve switches and fluid flows between the normally closed and the common of an Isolation Valve Choice of Valve function. 2-way normally closed 2-way normally open 3-way Inert fluid path. The fluid path in a Bio-Chem Valve Isolation Valve can be made entirely from extremely inert materials such as PTFE and PEEK. Choice of materials. Valve bodies are available in PPS, PEEK and PTFE. Diaphragms are available in FFKM, EPDM and PTFE. (Not all combinations of materials are available in all sizes or configurations).

3 Choice of Valve orifice sizes. Precisely machined Valve orifice sizes from ( ) to ( ) in three different dimensional frames ensures that the most appropriate design for your application can be selected from standard configurations. Bi-directional. Bio-Chem Valve Isolation Valves identify the preferred inlet port on the Valve label. However, all Valves can be used in any flow InletFluid OutletSpring3 Why choose an Isolation Valve ? Maximum inertness The use of high performance plastics and polymers such as PTFE, PEEK and FFKM ensures that the liquid being handled by the Valve is always in a highly inert environment. There is no contact with any metallic surafces within the response times Switching time from port-to-port is generally less than 20ms across the range of Isolation footprint Bio-Chem Fluidics Isolation Valves are specifically designed to be fitted in tight spaces within instruments. The largest Valve diameter is and longest overall length is less than 3.

4 Minimal dead volume Small overall size also helps keep the internal volumes minimized. The Valves are machined precisely to ensure that they have very low internal volumes (typically less than twice the orifice size).applicationsPrecise, repeatable dispensing of reagentsMaintaining a repeatable dispense of aggressive (and often very expensive) reagents into an analytical instrument can be problematic with conventional pumping equipment. Some forward thinking instrument designers have abandoned the concept of using a pump and have instead turned to using a Bio-Chem Fluidics Isolation such applications, a standard 2-way normally closed Isolation Valve is connected to a dip tube, which is inserted into the bottom of a reagent bottle. Low pressure nitrogen (or other appropriate inert gas) is introduced seperately to blanket the volume above the liquid in the reagent bottle. The pressure inside the bottle (maintained precisely at a calibrated low value) is sufficient to force the reagent liquid up the dip normal conditions, the Valve is not energized and remains closed so there is no the Valve is energized the diaphragm opens and flow through the Valve is established.

5 The Isolation Valve now becomes a very repeatable fluid dispenser - the amount of liquid dispensed is dependent only on the time the Valve is and Dispense ( sip and spit )Sometimes the volume of liquid to be dispensed needs to be either a) very small, b) extremely precise or c) both. In these situations it is very common to use a precision machined syringe to control the dispense Fluidics 3-way Isolation Valves are commonly used as the link between the liquid reservoir, the syringe and the instrument. A 3-way Valve has three ports; normally open (NO in illustration), normally closed (NC) and common (Com). The common port is connected to the syringe. When the plunger is withdrawn, the Valve is not energized and the flow is between the reservoir and the syringe via the NO port (aspiration or sip ).When the syringe is pushed in, the Valve is simultaneously energized. The flow path switches to the to the NC port, which is connected to the instrument (dispense or spit ).

6 Although standard threaded port Valves are common in this application, Bio-Chem Fluidics can, as an option, supply Valves with luer fittings to allow direct coupling to the syringe (contact your regional sales office for more details).Normally closedIsolation valveCustomcapDispenseReagentbottleInert GasDe-energized ( sip )Energized ( spit )NONCComNONCComFlow pathFlow Valve selection Guide 1. Select Valve function: 2-way Normally Closed (NC), 2-way Normally Open (NO) or 3-way2. Select the orifice size / Cv valve3. Confirm that the appropriate materials of construction are available in the specified Valve Turn to the page indicated to see full details and ordering information for each NC3-way2-way NOPolymers referenced in this brochure:EPDM = ethylene - propylene - dieneFFKM = perfluoro elastomerPEEK = polyetheretherketonePPS = polyphenelyne sulfidePTFE = polytetrafluoroethyleneValve orifice / CvBody / (pg. 5) / (pg. 5) / (pg. 7) / (pg. 7) / (pg.)

7 9) / (pg. 9)-NA-100T2NC (pg. 9) / (pg. 9)-NA--NA- Valve orifice / CvBody / (pg. 7) / (pg. 7) / (pg. 9) / (pg. 9) Valve orifice / CvBody / (pg. 7) / (pg. 7) / (pg. 9) / (pg. 9)-NA-100T2NO (pg. 9)trademarksCoolCube is a trademark of Bio-Chem Fluidics Valve is a trademark of Bio-Chem Fluidics 038T SerIeS Isolation Valves 038T Isolation Valves are 2-way Normally Closed Valves They are available with either side-located (038T2S) or bottom-located (038T2B) threaded ports Two orifice sizes are available: / and / Design based on ( ) diameter high efficiency solenoid Chemically resistant PPS or PEEK body with a choice of PTFE, EPDM or FFKM diaphragm Low power consumption ( Watts, amps @ 12 VDC; Watts, amps @ 24 VDC) and minimal heat generation Maximum operating pressure = 20 psigFor 24V replace 038T2x12 with 038T2x24 where x=S (side) or B (bottom) portsOrdering info, 038T2S seriesOrdering info, 038T2B seriesPArT MAT LDIA.

8 MAT LINT. VOL ( L)PArT MAT LDIA. MAT LINT. VOL ( L)12V DC, threaded side connections, Normally Closed, orifice, Cv = DC, threaded bottom connections, Normally Closed, orifice, Cv = DC, threaded side connections, Normally Closed, orifice, Cv = DC, threaded side connections, Normally Closed, orifice, Cv = , PEEK body038T2S PPS DrAWINGS038T SerIeS Isolation Valves continued038T2B Isolation [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]Set screw positionvariable to+ [ ] / [ ] hole thru / [ ] / [ ]typ. 2 places1/4 -28 UNF portstyp. 2 placesDimensions are in inches [mm]Lead wires not to scaleWires are 28 AWG, min 24 [610] long038T2S Isolation [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] / [ ] hole thru / [ ] / [ ]typ. 2 places1/4 -28 UNF portstyp. 2 placesDimensions are in inches [mm] [ ]Set screw positionvariable to+ [ ]Lead wires not to scaleWires are 28 AWG, min 24 [610] long7 For 24 VDC, replace 075 Txxx12-xx with 075 Txxx24-xx in any of the part numbers SerIeS Isolation Valves 075T Isolation Valves are available in 2-way Normally Closed, 2-way Normally Open and 3-way styles Two orifice sizes are available: / and / ( / and / in the 3-way Valve ) Design based on ( ) diameter high efficiency solenoid Widest choice of chemically resistant body materials, PTFE, PPS or PEEK body with a choice of PTFE, EPDM or FFKM diaphragm Low power consumption ( Watts, amps @ 12 VDC; Watts, amps @ 24 VDC) and minimal heat generationOrdering info, 075T seriesPArT MAT LDIA.

9 MAT LMAX. PreS.(psig)INT. VOL ( L)PArT MAT LDIA. MAT LMAX. PreS.(psig)INT. VOL ( L)12V DC, threaded side connections, Normally Closed, orifice, Cv = DC, threaded side connections, Normally Closed, orifice, Cv = (2-way Normally Closed), PTFE body075T2NO (2-way Normally Open), PPS body075T3MP (3-way), PEEK body12V DC, threaded side connections, 3-way, orifice, Cv = DC, threaded side connections, Normally Open, orifice, Cv = DC, threaded side connections, Normally Open, orifice, Cv = DC, threaded side connections, 3-way, orifice, Cv = DrAWINGS075T SerIeS Isolation Valves continued1 ABCDEFGHIJKLGHIJKLABCDEF2345678123456780 75T seriesIsolationValves075T2NC Normally Closed075T2NO Normally Open075T3MP [ ]ABody dia B1/4 -28 UNF portstyp. 2 places (180 apart)View on XView on YLead wires not to scaleWires are 26 AWG, 24 [610] long typ ALL modelsSolenoid dia [ ] [ ] [ ] [ ] [ ] [ ]A B SXYSet screw positionvariable to+ [ ] [ ]ABody dia B1/4 -28 UNF portstyp.

10 2 places (180 apart)View on XView on YSolenoid dia [ ] [ ] [ ] [ ] [ ] [ ]A B SXYView on XSolenoid dia SBody dia BView on [ ] [ ]Set screw positionvariable to+ [ ]1/4-28 UNF portstyp. 3 placesat 0 , 90 and 180 Dimensions are in inches [mm]075T3MP PTFE body075T3MP PPS/PEEK [ ] [ ] [ ] [ ]A [ ] [ ] [ ] [ ] S0 90 180 9 100T SerIeS Isolation Valves 100T Isolation Valves are available in 2-way Normally Closed, 2-way Normally Open and 3-way styles Multiple orifice sizes are available: 2-way NC / , / and / 2-way NO / and / 3-way / and / Design based on ( ) diameter high efficiency solenoid Chemically resistant body materials, PTFE, PPS or PEEK body with a choice of PTFE, EPDM or FFKM diaphragm Low power consumption ( , amps @ 12 VDC; , amps @ 24 VDC) and minimal heat generation100T2NC (2-way Normally Closed), PTFE body100T2NO (2-way Normally Open), PEEK body100T3MP (3-way),PTFE bodyOrdering info, 100T series12V DC, threaded side connections, Normally Closed, orifice, Cv = DC, threaded side connections, Normally Open, orifice, Cv = DC, threaded side connections, Normally Closed, orifice, Cv = DC, threaded side connections, Normally Open, orifice, Cv = DC, threaded side connections, Normally Closed, orifice, Cv = DC, threaded side connections, 3-way, orifice, Cv = DC, threaded side connections, 3-way, orifice, Cv = 24 VDC, replace 100 Txxx12-xx with 100 Txxx24-xx in any of the part numbers MAT LDIA.